santmyer



fw. LSANTMYER. WASTE FUEL BURNER. APPLICATION F'ILED JUNE 13, X911 Patented May 20, 1919.

3 SHEEIS-SHEET 1.

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W. J. SANTMYER.

WASTE FUEL BURNER.

Arme/mon HLED1uNE1a.19u.

Patented May 20', 1919.

3 SHEETS-SHEET 2.

inve/wm Mge? W. J. SANTMYER.

WASTE FUEL BURNER.4

` APPLICATION r|uzr)nmla1s,1suzx Patented 20, 1919.

3 SH HEET 3.

May E E T S-S UNITED sTATEs i1-ie.

WALTER JACOB SANTMYER, or sEATTLE, Wnsnin'eroiv.

. WASTE-FUEL BURNER.

` Application filed .Tune .13, 1917, Serial No, 174,581.

To all whom it may concern: y

Be it known that I, WALTER J. Sniv'rarynn, a citizen Vot the United States, residing at I Seattle, in the county of King and .State of Washington, have'invented certain new and useful Improvements in Waste-Fuel Burnf yers; and I do declare the following to be a full, clear, and exact description of the invention, such asWill enable others skilled in the art to vwhich it appertains to malte and use the same.

Myinvention relates to that class of de. vices 1 designed for consuming Waste fuel such as coal dust' and the well knownl poor grades of coal such as slack. I. am aware Athat numerous devices have heretofore been desigi'ied for ,carrying out the .saine purpose as my invention, but they have beeninore or less inefficient due to numerous causes.

The object'of my invention, therefore,V is

to' provide a simply constructedl and inexpensive burner, yet one Which will. be

highly leflicient, and durable.

With the foregoing `general object in view, the invention resides in the novel features of construction and the unique-combination of .parts to be hereinafter fully described and claimedjthe descriptive matter being supplemented by 'the accompanying drawings which form a part of this-specification and in which:

Figure 1 is a top plan view of a` furnace `showing the application oftWo of the ini- .proved burners thereto;l

a portion-of 4a furnace is shown, thisvfurnace embodying a.- fire box l, the' front Wall 2 of said fire box being formed,- Witli one one more openings 3, tvvo of vslich openings' being shown; Theopenings 3 receive therein the `reduced inner. end 4 cfa pair ofouter.

druins, the body portion of""said drums being located on the exterior ofthe furnace and being contracted at 6. Y

Specification of Letters Patent.l Patented May 2o', 191e.

'Il iedrun'is 5A forniv passages as Will i hereinafter vset forth, to admit an abiidaiity f quantity of air to be drawn into 'the firebox' by the fluid pressure blast yet to be rexplained, and said drumsireceive therein a pair of inner drums 7 which .are positionedV 'I coaxially .in said outer drums.

The inner ends of thedrums 7 are contracted at`8,r

said contracted ends being positioned adja cent the contracted portions 6 of the drums 5 as shown clearly in Figs; l and 3; Nozzles" preferably have their inner ends positioned '9 extend coaxially into the drums 7 and adjacent the contracted 'ends- 5 of said" drums, the louter ends of said nozzles 9 beJ 170,. ling equipped with elbows l0 into vihichtheg powdered fuel to be consumed, is fed.- "IWoj 3 blasts of air are also fedinto `the elbows 10, so as to insure a thorough mixingfof v.the

slack or thelihe With. such `air and fat the 'same time to force the fuel int-o the fire: box;

The 'force ofthe air and fuel discharged from the inner ends of the'nozzles`-9, creates 1 a suction throughvthe inner and outer 'drums 7 and 5 respectively, such suction drawing. an additional quantity of air, intothe fuite,

I i i. nace to facilitate combustion, the puter ends of bothI drums being-opensoas tofperinity the air toreadily ent-er.` Ifrequirechhoivf, ever, said ends may 'well be equipped `With suitable dampers (not shown);

Fuel supply pipes lljlead toone end'of" the elbows 10 from suitablebuifkeis, Where--` `as the nozzles 9 extend from the opposite ends of said elbows. Thesenozzles'niy be of the flat construction vshown in;r Figs. 4f

and 5, or may be of circular 'shape in cross section as depicted clearly theiorm"- of-' The 'fuel deposited into the y,elbows 10,-is

`the invention illustrated in Figs. '6 and es picked up by a fluid pressure `blast dis-N charged from branches l2 which extend from a pressure supply pipe 13, said pipedeading from a suitable blower l-t, so thatl the'inix ture is discharged lfrom the inner end` ofY the nozzle 9 atl which pointit is ignited and is coiisuinedto perform the requiredf- Work. An auxiliaryvquantity .ofnir suitable airspraying devices 15 which 'ex-v ide tend into saidvelboivs f roni'a-` pipe lineQlG-p 16 being in longitudinal alineinentl u'iththe', center ofthe nozzlesV 9. This. auxiliary quant v of'air, being sprayed into' the deon the exterior of the` furnace, said devices iin vice. causes a much more thorough mixing Q'f air with the-'powdered fuel and thus in seres more perfect combustion at the delivcry end yf the nozzles.

In in'tially igniting the fuel, a pilot burner s ich as 17 is employed, said burner being il istrated for burning oil, although it could: well consume any preferred fuel. When two of the improved burners are eniployed, :is illustrated in the present eniiiodiment of the invention, the burner 17 will be position d midway between said burners and will extend through the front wall of the fire box. as shown clearly in Fig. 1, a, suitable inlet 1 8 being provided for supplying an excess quantity of air to the burner.

Similar passages 19'are shown in dotted lines in Figs. 1 and 2, for feeding anl abundant quantity of atmospheric air to the flaming fuel at the delivery ends of the nozzles 9. This i shown for, illustrative purposes, howover, andl other suitable air supplying means could well be employed. T he burner 17 is supplied with oil through a. suitable pipe :20 and by means of a branch pipe 21, steam may be fed to said burner to mix with the oil to increase combustion, said branch pipe extending from an arched steam pipe 23, said pipe having additional branches trminating in steam spraying devices 2i, the latter being positioned iii the space between the inner and outer drums 7 and 5 respectively. It is the oiiice of the spraying devices 2l, to

supply a` quantity1 of steam to the flaming fuel at the delivery end of the nozzles.

The bottom 25 inclines downwardly to the hopper shaped upper end 26 of an ash pit 27, said ash pit having a suitable water pipe 28 which supplies a suiiicient quantity of liquid to prevent adhesion from taking place. There is thus no diiiiculty encountered in removing the ashes, as is the case when no water is supplied.

In eration, the fuel to be consumed. is fed th'.. ,'.igh theA pipes 11 to 'the nozzles 9. by the blasts of compressed air or 'the lili'el supplied by the branch pipes 1'2 and by the air spraying devices 15. .a thorough mixing of the fuel and air takes place in the elbows i0, this mixture being then discharged from the inner ends'of the nozzles. at which point it is ignited 'by the burner 17 or by any other suitable means which may be provided. During the operation of the device. a strong draft of air is induced through the spaces between the inner and outer drums and bey tween the inner drums and the nozzles 9, this surplusiair serving to increase combustion as does also the air supplied through the passages 18 and19. Even the poorestgrade of slack and other kinds of coal are burned thoroughly by the prese-nt invention and 'all ashes are deposited in the ash pit Q7 so that .the boiler tubes hind fines are notI clogged. Furthermore, since these ashes do not reach the smoke stach, there is no 'danger whatever of the latter depositing them upon the surrounding territory.

From the foregoing, take-n in connection with the accompanying drawings, it will be obvious that although the improved burners are of con'iparat-ively simple and inexpensive construction, they are highly efficient and durable for' the purposes specified as well as any others to which they are applicable. Since probably the'best results are obtained from the speciiic construction shown and the exterior of said lirebox having a contracted inner end disposed at said opening, a cylindrical inner drum in and spaced from said outer drum and having a contracted frusto cone-shaped inner end disposed adj acent the contracted. pbrtion of said outer drum, the two drums being open at their inner and open to the atmosphere at the outer ends, a powdered fuel burning nozzle extending into and spaced from said inner drinn, an elbow from which said nozzle extends, a powdered fuel supply pipe leading to said elbow. an air pressure inlet into said elbow directed obliquely across the corner or angle thereof, and an air pressure spraying hevice having a discharge head disposed in si elbow between said air pressure inlet and 'the outlet end of said elbow. and in line with the axis of such outlet end.

Q. In a powdered fuel burner. an elbow. a powdered fuel supply pipe discharging into one end of said elbow,a fuel discharge nozzle communicating with the other end of sait elbow. an air pressure inlet rvinto said elbow directed obliquely across the corner or angle thereof, and an air pressure spraying device having 'a discharge head disposed in said elbow between said air pressure inlet and the outlet end of the elbow. and in line-with the axis of said outlet end. f

5i powdered fuel burner comprising an elbow', a pipe discharging into one enov of said elbow for supplying powdered fuel thereto. a nozzle communicating with the otner end of said elbow. and a liuid pressure inlet directed across the corner or angle ofv said elbow for carrying the fuel through the nozzle in suspension and to prevent lodging of said fuel in said elbow.

4. In a powdered fuel burner, the combi-l nation of a fire-box having acircular opening in its wall, an outer cylindrical drum on the exterior of said {ire-box andhaving a contracted inner end'disposed at said opening, a cylindrical inner drum in and spaced from said outer drum and having a oo ntracted frusto cone-shaped inner end `dlslposed adjacent the contracted portion of said outer drum, the two drums being open at their inner ends 'and open tothe atmos- Ehere at their outer ends, a powdered fuel urning nozzle extending into and spaced from said inner drum, means for supplying vpowdered fuel and fluid under pressure to said nozzle, and a `iiuid spray pipe between the 4upper' sides of said inner and outer drums and discharging against the contracted part of the latter, whereby 'the fluid will be .directed downwardly into the mixture of air and powdered fuel.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

VWALTER JACOB SANTMYER.

Witnesses:

R. G. SHARPE, A. E. MAGINNIS. 

